The Beavertail 60 in. Wide Bottom 2009 is a flat-bottom design and the Beavertail Stealth 2000 2013 is a catamaran design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
For family outings this is probably the sharpest distinction between the two. The Beavertail 60 in. Wide Bottom 2009 is rated for 4 passengers, while the Beavertail Stealth 2000 2013 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beavertail 60 in. Wide Bottom 2009 could be the deciding factor.
Bottom line: Choose the Beavertail 60 in. Wide Bottom 2009 if your priority is putting more people on the water - it handles 4 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Beavertail Stealth 2000 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.